CTH200 Series PLC User Manual
With high reliability, CPU, as a slave of some master, enable to connect to PROFIBUS field bus
to exchange data fast and in real time as well as operate alone by DP slave module. Figure 5-9
and 5-10 show the profibus-DP network architecture of SM277A and SM277B DP slave
respectively.
Refer to appendix G SM277A Module and appendix H SM277B Module for more information on
using SM277A and SM277B DP slave
P R O F IB U S 连接
S 7 -3 1 5 - 2 D PP G / PC
S M 2 7 7 A 扩展模块 扩展模块 扩展模块
C T H 20 0
Figure 5-8 Construction of SM277A PROFIBUS-DP network
DP master
.......
Expansion modules
EM277B
PG/PC
MPI
PROFIBUS connection
Figure 5-9 Construction of SM277B PROFIBUS-DP network
5.7 PROFINET Communication
Connect expansion modules(up to 8), as the remote I/O expansion, to PN master by SM277PN
slave module. Typical PROFINET network architecture shows as bellow:
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